#2B6DD4
Closest named color: Royal Blue (#4169E1). oklch(55% 0.172 259.3), rgb(43, 109, 212).
Aa
White text reads best on this color (4.95:1).
About this color
#2B6DD4 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.172 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.029 away. White text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.24:1 |
| White text | 4.95:1 |
Values
| HEX | #2B6DD4 |
| RGB | rgb(43, 109, 212) |
| HSL | hsl(217, 66%, 50%) |
| OKLCH | oklch(55% 0.172 259.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2B6DD4 | 4.95:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #2B6DD4 | 4.24:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #2B6DD4 text on white | 4.95:1 | AA | Lc 73.8 | Content text, not long reading |
| #2B6DD4 text on black | 4.24:1 | AA large text | Lc -27.9 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300
#A3C2F3
oklch(80.9% 0.077 259.4)
-
Step 400
400
#71A1ED
oklch(70.7% 0.124 259.3)
-
Step 500
500
#4B87E8
oklch(63% 0.159 259.6)
-
Step 600
600 (this color)
#2B6DD4
oklch(55% 0.172 259.3)
-
Step 700
700
#1F5CB9
oklch(49.1% 0.16 259.1)
-
Step 800
800
#1C4C96
oklch(42.8% 0.132 259.1)
-
Step 900
900
#1D4077
oklch(37.7% 0.102 259.2)
-
Step 950
950
#122646
oklch(27.1% 0.065 259.4)
#2B6DD4 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3078D8 | 0.030 |
| Deuteranopia (no green cones) | #0069D2 | 0.022 |
| Tritanopia (no blue cones) | #008696 | 0.134 |
| Achromatopsia (no color) | #707070 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B6DD4
#2B6DD4
oklch(55% 0.172 259.3)
- #956800
#956800
oklch(55% 0.114 78.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2B6DD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.029
- Cerulean Blue #056EEE ΔE 0.041
- Windows Blue #3778BF ΔE 0.049
- Mid Blue #276AB3 ΔE 0.052
- Neon Blue #4361EE ΔE 0.053
- Azul #1D5DEC ΔE 0.056
- Warm Blue #4B57DB ΔE 0.058
- French Blue #436BAD ΔE 0.062
Use #2B6DD4 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.